This.
Every verbal conversation of this sort needs to be backed up in writing.
Start the message with "As discussed this morning (or whenever)" then just factually repeat what was said, with no comment or opinion, and finish by briefly adding any conclusion or decision needed from you (you may not need to add anything).
I would say it is too early to rock the boat on the 50/50 - you need several more weeks or even months of evidence.
Remember, you are playing the long game; don't jump the gun.
It is a good thing that he won't be seeing DC for nearly two weeks, because this proves that he is slowly drifting towards the eventual outcome which we all predict: in the end he will be seeing them EOW and paying you maintenance. It is just a matter of biding your time and watching it all slowly unfurl.